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PC were simultaneously detected at a wavelength of 280 nm and identified by comparison with controls for their retention time and UV spectrum. Co-injections with commercial standards (hydroxytyrosol, tyrosol, catechol, caffeic acid, acid p-coumaric, oleuropein, gallic acid and syringic acid) were ...
The error bars represent the standard error, which is equal to the standard deviation, divided by the square root of the number of samples. Generally, low removal efficiencies were obtained for the R-nFe dose of 15 g L−1 at a contact time of 180 min for all targeted compounds. More ...